Photosynthesis

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose, using carbon dioxide and water.

Front

What is the role of chlorophyll in photosynthesis?

Back

Chlorophyll is a green pigment found in the chloroplasts of plants that absorbs light energy, primarily from the sun, which is essential for the photosynthesis process.

Front

What are the two main stages of photosynthesis?

Back

The two main stages of photosynthesis are the light-dependent reactions and the Calvin cycle (light-independent reactions).

Front

Where do light-dependent reactions occur?

Back

Light-dependent reactions occur in the thylakoid membranes of the chloroplasts.

Front

What is produced during the light-dependent reactions?

Back

During the light-dependent reactions, ATP and NADPH are produced, along with oxygen as a byproduct.

Front

What is the Calvin cycle?

Back

The Calvin cycle is a series of biochemical reactions that take place in the stroma of chloroplasts, where carbon dioxide is fixed into glucose using ATP and NADPH.

Front

What molecule does carbon dioxide combine with in the Calvin cycle?

Back

In the Calvin cycle, carbon dioxide combines with RuBP (ribulose bisphosphate) to form 3-PGA.

Front

What is RuBP?

Back

RuBP (ribulose bisphosphate) is a 5-carbon sugar that acts as the carbon dioxide acceptor in the Calvin cycle.

Front

What is the ultimate source of energy for photosynthesis?

Back

The ultimate source of energy for photosynthesis is the sun.

Front

What is the significance of water in photosynthesis?

Back

Water provides the electrons needed for the light-dependent reactions and is split to release oxygen as a byproduct.